Black Box Modular SwitchesInstallation and User Guide (8/99)
An important feature of the LE14XXA-Series is the use of 4-Port Modules (4PMs) and for flexible mixed-media connectivity to RJ-45 and fiber media use of Combo 4- port module. Since the LE14XXA-Series have dual-speed capability for copper-port, the front port slots are designed to support all standard Ethernet media types at 10 o 100Mps speed. Each 4PM provides one port for connecting one Ethernet segment with its individual connector type and media.
For a list and brief illustration of 4-Port Module types, refer to Section 2.4 Each 4PM is individually described in the following sections.
5.2.1LE1428C, 100Mb multi-mode FX-ST-4-port Module, “twist lock” connector The LE1428C is a multi-mode 100Mbps fiber optic 4-port
module equipped with a dual ST-type connector. It functions as a fiber optics
transceiver to support 100BASE-FX | 3 | | | 2 | | 1 |
| | | |
network segments. When installed in a | | FDX/HDX 1 | 2 | 3 | 4 |
| 1 | LK | | | ACT |
LE14XXA-Series Fiber Switches, it | | 2 | | | | |
| 3 | | | | |
| 4 | | | | |
supports fiber optic cable distances up the | | 1 ACTIVITY | | |
IEEE-specified 100Mbps shared-collision- | | 2 | LINK |
| | | | | |
domain distance limits, i.e., typically 2km at | | | 3 | FULL/HALF |
full-duplex and 412m at half-duplex. | | | | DUPLEX MODE |
| | | | | |
The module is equipped with an Activity (ACT) LED, a Link (LK) LED which indicates proper connectivity with the remote device when lit, and the FDX/HDX LED indicate the full or half-duplex mode. Lettering on the front of the module identifies it as “100 FX” to avoid confusion with other similar-looking 10 Mb fiber 4PMs.
5.2.1a LE1424C, 10 Mbps multi -mode FL-ST-4-port type, “twist-lock” connector
The LE1424C is a multi-mode 10 Mbps fiber optic module equipped with a dual ST - type connector. It looks similar to the 100Mb LE1428C, but has the lettering “10 Mb” on the front to distinguish it. It supports fiber optic cable distances up the IEEE -standard 10 Mb distance limits , i.e., typically 2km at full-duplex and at half-duplex.
Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that indicates proper connectivity with the remote device when lit, and a FDX/HDX LED to indicate full-duplex mode when lit (or half-duplex when off). Lettering on th
